• The applicant should go to a Sudan embassy or consulate in their country of origin and
• Submit current, valid, signed Passport. It must not expire within 6 months and must have at least 1 blank visa page.
• Submit two (2) completed, signed Sudan Visa Application forms.
• Submit two (2) recent, 2x2 Passport Photographs with the whites of your eyes visible and taken by a passport photographer. They must not be a digital or non-passport style photograph.
• Submit a computer-generated flight itinerary from your travel agent, airline, or online booking agency or a copy of your ticket(s). It must indicate your name, date of arrival and departure from Sudan and flight information.
• Submit an original International Certificate of Vaccination showing inoculation against yellow fever.
• Submit a business Letter from employer or sponsoring company in the country of origin on company letterhead, introducing the applicant, indicating the applicant's employment
• Pay visa fees at a designated bank and submit the receipt for issuance of a visa

1. A Completed Sudan visa application form.
2. A passport issued by your government valid for at least six months. Your passport must also be valid past the date of your expected departure from Sudan. (Passport must be signed.)
3. Two passport-size photo taken within the past six months.
4. International Certificate of Vaccination for Yellow Fever.
5. Business Letter from applicants company if travelling for business (on company letterhead and signed by someone other than the applicant).
6. Proof of payment of Visa fees

Director, Passport, Immigration and Nationality
Sudan Ministry of interior
P.O. Box 770
Khartoum, Sudan
Tel: 249 1 83764624
Fax:249 1 83764624

All foreigners on Business trips to Sudan except when the trip involves the provision of technical assistance services of any nature.

The applicant has to pay between $50 and $100 since different embassies set different fees

A Sudanese business Visa is valid for 8days to 3 months.

http://www.visas2go.co.uk/forms/sudanese_visa.pdf

Please attach sample completed documents that would help other people.

 it takes between 2 to 15 working days to process a Sudan Business Visa.

Videos explaining the procedure or to fill the applications. 
Attach videos using the following tag <&video type="website">video ID|width|height<&/video&> from external websites.
Please remove the "&" inside the tags during implementation.
Website = allocine, blip, dailymotion, facebook, gametrailers, googlevideo, html5, metacafe, myspace, revver, 
sevenload, viddler, vimeo, youku, youtube
width = 560, height = 340, Video ID = Can be obtained from the URL of webpage where the video is displayed.
e.g In the following url "http://www.youtube.com/watch?v=Y0US7oR_t3M" Video ID is "Y0US7oR_t3M". 
	

• A visa must always be obtained by any visitor in order to enter Sudan.
• Entry should be made only through the countrys gazetted ports of entry/exit.
• Every visitor will be required to carry a passport with validity beyond six months.
• Where visitors seek to stay longer than the period granted on arrival, extension of the period *should be sought from the passport, Immigration and nationality office in Khartoum before expiry of the initial Visa.

• Name:
• Date / Place of Birth
• Nationality
• Sex:
• Occupation:
• Marital Status:
• Employer:
• Contacts
• Passport Number.:
• Passport Expiry date
• Passport Issuing Authority
• Date of Travel:
• Mode of Travel
• Purpose of Trip:
• Duration of Stay:

A Sudan visa is an official government document that temporarily authorizes a foreigner to be in the country. The Sudan visa is in the form of a stamp/sticker in the passport and is obtained from a Sudan Embassy in a foreigners country of origin. The Sudanese business visa is given to foreigners on short business visits to Sudan

• The Sudanese authorities refuse entry and transit to holders of passports that contain visas for Israel (either valid or expired).
• You must register with the Aliens Department within three days of arrival for a fee of around 35 (payable in local currency). You need to bring two passport-size photos.

Please explain what are other uses of obtaining this document/certificate.
e.g. Birth Certificate can be used as proof of identity.

INDIA
http://www.sudanembassyindia.org/visa_procedure.html

NIGERIA
http://sudan.visahq.com.ng/

More information which might help people.